Lll. a limited supply of necessary resources. If there isn't enough resources the species will have to learn to adapt to be able to gather the new food supply they need. Such as birds and there beaks, if the insects population went down and that was the main food supply for that type of bird they would have to be able to adapt in order to survive, so evolution occurs. Over time that bird would change to adapt to its new feeding source.
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Answer;
-Carbohydrates
Sugar is a component of carbohydrates.
Explanation;
-Carbohydrates are among the four important biomolecules, others being nucleic acids, proteins and lipids.
-Sugars are simple carbohydrates including fructose, glucose, and lactose, which are found in nutritious whole fruits.
-Carbohydrates take the form of either sugars or starches (complex carbohydrates); however, a starch is simply a long chain of sugar molecules strung together, therefore, they both end up as the same thing once they enter your blood stream.
Well it's thought that the oxygenation of the atmosphere contributed to the evolution
An electromagnet is a kind of magnet whose magnetic field is created by flow of electric current. The magnetic field disappears when the current stops.
The greatest advantage of an electromagnet over a permanent magnet is that it has the advantage of controlled holding power and on - command release.
Through the application of controlled DC electric current, electromagnets have the ability to attract and hold ferrous materials with varying degrees of force and to release the item as required.